HSC Science (Computer Science) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions

Draw the structures of polymers formed from the following monomers

\[\ce{n HOOC–R–COOH + n HO–R'–OH}\]

Answer the following.

Draw the structures of polymers formed from the following monomers

H₂N–(CH₂)₅ – COOH

Name and draw structure of the repeating unit in natural rubber.

Write the formula to calculate the % atom economy.

Name the γ-isomer of BHC.

Answer the following.

Write name and formula of raw material from which bakelite is made.

Identify condensation polymers and addition polymers from the following.

\[\begin{array}{cc}\ce{-(CH2 - CH -)_{n}}\\
\phantom{....}|\\\ce{\phantom{.......}C6H5}
\end{array}\]

Identify condensation polymers and addition polymers from the following.

-(CH₂ - CH = CH - CH₂ -)_n

Identify condensation polymers and addition polymers from the following.

-(CO(CH₂)₄ - CONH(CH₂)₆NH-)_n

Identify condensation polymers and addition polymers from the following.

Attempt the following:

Write the chemical reactions involved in the manufacture of Nylon 6,6.

Attempt the following:

Explain the vulcanisation of rubber. Which vulcanizing agents are used for the following synthetic rubber?
a. Neoprene
b. Buna-N

Write the reaction involved in the formation of bakelite.

Attempt the following:

What is meant by LDP and HDP? Mention the basic difference between the same with suitable examples.

How will you illustrate the use of a safer solvent and auxiliaries?

Answer the following

Define catalyst.

Write preparation, properties, and uses of Teflon.

Explain any three principles of green chemistry.

Answer the following:

Explain the atom economy with a suitable example.

Answer the following

How will you illustrate the principle, minimization of steps?